Improvement in plows



PATENT OFFICE.

JOHN R. P. JETT, OF KNOXVILLE, TENNESSEE.

IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent No. 108,!49, dated October11, 1870.

T0 all whom, it may concern:

Be it known that I, JOHN R. P. JETT, of Knoxville, in the county of Knoxand State of Tennessee, have invented a new and useful Improvement inPlows; and I do hereby declare that the following is a full, clear, andexact description thereof, which will enable others skilled in the artto make and use the same, reference being had to the accompanyingdrawings, forming part of this specification.

My invention has for its object improvement in the construction ofplows, whereby they shall be better adapted for operating in differentsoils.

This invention consists in. the arrangement of the point of the plow anda seat of peculiar construction for the reception of a thin metallic orthick wooden mold-board, all as hereinafter set forth.

Figure l of drawings represents a side View of my improved plow, andFig. 2 a bottom plan View.

A indicates the standard, and B the landside bolted thereto.

C is the beam, which is bolted to the upper end of the standard; and D,a brace-bar bolted to the landside, and slotted at its upper end topermit the adjustment of the beam, for the purpose of regulating itspitch77 The bolt E works in the slot, and serves to connect the brace tothe beam.

F F are handles, bolted together at their lower ends to the standard A.

The part H, which may be termed a seat, and which constitutes myinvention, has atriangular form, and is provided with an angularshoulder, it', at its rear edge. This seat is bolted to the point I, andis apermanent part of the plow or plow-frame.

As shown in the drawings, a thin metallic mold-board, J, forms a portionof the plow, which is thus adapted to work in sandy or light dry soils.The step or shoulder h ofthe seat H adapts the plow to' use in clayey orother wet and sticky soils, since the wooden mold-board L may be securedto the seat by means of said step.

It is of great importance to the farmer, in point of economy andconvenience, to possess a plow adapted for use in both sandy and clayeysoils. In the former a wooden moldboard is not serviceable, since thereis too much friction on its surface during the passage of the earth overit; but to a soil of op posite character it is perfectly adapted byreason of lightness and the fact that the soil will not stick to it. Iemploy a brace, K, which is shown secured to the ymetallic moldboard bymeans of a bolt passing through the proj ectionjg. IVhen the woodenmold-board L is attached in place of the metallic one, the

brace K is bolted directly to it, its increased thickness compensatingfor the absence of a projection. The front end of L is shaped to adaptit to fit in the step It'.

I am aware that plow-standards provided with fixed or detachableprojecting arms to facilitate attachment of plowshares or moldboards ofdifferent or varying form are not new in a broad or general sense, andsuch construction is illustrated in the patent for a plow granted toThomas IViard, December the 14th, 1848, and I lay claim merely to animprovement in this direction for a specific purpose.

Vhat I do claim as my invention is* The arrangement of the point I andseat H la for the reception of the mold-boards J or L, as desired,substantially as and for the purpose set forth.

JOHN E. P. JEIT.

Witnesses:

W. T. OsBoEN, E. A. JET'r.

